Every game is winnable?

Last night I played a game. I was Diana vs a fizz mid. Level one I went ham on fizz hitting him with every passive I proced and using my sheild to cancel his damage. I had him less than 100 health at level 3. He went all in and killed me. I even used barrier and dodged his playful trickster. I was blown away. I don't even know how it was possible. I came back to lane and died again then fizz started roaming. He killed my top lane who had also died to Fiora twice. I waited for fizz in a bush while he walked back down to lane went all in again on the low health fish and he killed me. 0/3 Diana 4/0 fizz. I came back to lane after finishing an abysal.

When I tell you I crushed fizz while taking no damage.... Yea. So then I headed bot lane to gank. My jungler haven't ganked ever. My bot lane was 2/6. I got a double kill then fizz came killed my low health teammates then I killed fizz. Now I'm 4/3. Tilt time

We won the game. I killed fizz everytime I saw him because I hated him. I finished 19/5.

Don't give up people. Winning is possible even when your losing.